[Playlist] xspf/json

[Lucas Gonze]

Really excellent to see this, Chris.  I can think of many usecases.

Fabricio was working on a JSON version of XSPF a little ways back, 
though I don't know how far he got.  I think that he felt XSPF is overly 
verbose in JSON and there needed to be an adjusted syntax; it couldn't 
just be a direct translation.  For myself I think that it's probably 
less trouble to allow the verbosity than to explain to every developer 
who comes along why the JSON doesn't quite line up.

About fitting the extension, meta and link elements into JSON, I would 
have to start by writing the XML parser and looking at how the data 
structure looked.  My impression is that parser developers have usually 
left the extension element up to the mercy of the underlying XML 
library, and done direct support only for the meta and link elements.

-Lucas

Chris Anderson wrote:
> I'm working on a javascript xspf parser (turns out to be very simple)
> and now I'm interested in doing some ajax stuff with a json transport.
> My goal is to build a json string which evaluates to the same data
> structure my parser has been producing (so far I've only worked on the
> track element). My first attempt looks like this:
> 
> {"tracks":[{"location":"http://example.com/song.mp3","annotation":null,"identifier":"http://music.co/tracks/11","title":"Track 
> 
> Title","album":"Album Title","creator":"Artist
> Name","trackNum":3,"duration":51200,"info":"http://music.co/tracks/11"},{"location":"http://example.com/more.mp3","annotation":"Track 
> 
> by Artist","identifier":"http://music.co/tracks/3","creator":"Unknown
> Artist","image":"http://example.com/more.jpg"}]}
> 
> The parser code is at http://pastie.caboo.se/41127
> 
> If anyone can give me tips about how to fit the extension, meta and
> link elements into json I'd be much obliged. I'll probably be
> extending the json myself, and I'd like to do so in a way that
> maintains its equivalence with the xspf format.
> 
> -- 
> Chris Anderson
> http://jchris.mfdz.com
> 
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